1 /*
2 * Copyright (c) 1999, 2022, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javac.code;
27
28 import java.util.Collection;
29 import java.util.Collections;
30 import java.util.EnumSet;
31 import java.util.HashMap;
32 import java.util.LinkedHashMap;
33 import java.util.Map;
34
35 import javax.lang.model.element.ElementVisitor;
36
37 import com.sun.tools.javac.code.Scope.WriteableScope;
38 import com.sun.tools.javac.code.Source.Feature;
39 import com.sun.tools.javac.code.Symbol.ClassSymbol;
40 import com.sun.tools.javac.code.Symbol.Completer;
41 import com.sun.tools.javac.code.Symbol.CompletionFailure;
42 import com.sun.tools.javac.code.Symbol.MethodSymbol;
43 import com.sun.tools.javac.code.Symbol.ModuleSymbol;
44 import com.sun.tools.javac.code.Symbol.PackageSymbol;
45 import com.sun.tools.javac.code.Symbol.RootPackageSymbol;
46 import com.sun.tools.javac.code.Symbol.TypeSymbol;
47 import com.sun.tools.javac.code.Symbol.VarSymbol;
48 import com.sun.tools.javac.code.Type.BottomType;
49 import com.sun.tools.javac.code.Type.ClassType;
50 import com.sun.tools.javac.code.Type.ErrorType;
51 import com.sun.tools.javac.code.Type.JCPrimitiveType;
52 import com.sun.tools.javac.code.Type.JCVoidType;
53 import com.sun.tools.javac.code.Type.MethodType;
54 import com.sun.tools.javac.code.Type.UnknownType;
55 import com.sun.tools.javac.code.Type.WildcardType;
56 import com.sun.tools.javac.code.Types.UniqueType;
57 import com.sun.tools.javac.comp.Modules;
58 import com.sun.tools.javac.jvm.Target;
59 import com.sun.tools.javac.util.Assert;
60 import com.sun.tools.javac.util.Context;
61 import com.sun.tools.javac.util.Convert;
62 import com.sun.tools.javac.util.DefinedBy;
63 import com.sun.tools.javac.util.DefinedBy.Api;
64 import com.sun.tools.javac.util.Iterators;
65 import com.sun.tools.javac.util.JavacMessages;
66 import com.sun.tools.javac.util.List;
67 import com.sun.tools.javac.util.Name;
68 import com.sun.tools.javac.util.Names;
69 import com.sun.tools.javac.util.Options;
70
71 import static com.sun.tools.javac.code.Flags.*;
72 import static com.sun.tools.javac.code.Kinds.Kind.*;
73 import static com.sun.tools.javac.code.TypeTag.*;
74
75 /** A class that defines all predefined constants and operators
76 * as well as special classes such as java.lang.Object, which need
77 * to be known to the compiler. All symbols are held in instance
78 * fields. This makes it possible to work in multiple concurrent
79 * projects, which might use different class files for library classes.
80 *
81 * <p><b>This is NOT part of any supported API.
82 * If you write code that depends on this, you do so at your own risk.
83 * This code and its internal interfaces are subject to change or
84 * deletion without notice.</b>
85 */
86 public class Symtab {
87 /** The context key for the symbol table. */
88 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>();
89
90 /** Get the symbol table instance. */
91 public static Symtab instance(Context context) {
92 Symtab instance = context.get(symtabKey);
93 if (instance == null)
94 instance = new Symtab(context);
95 return instance;
96 }
97
98 private final boolean allowPrimitiveClasses;
99
100 /** Builtin types.
101 */
102 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null);
103 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null);
104 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null);
105 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null);
106 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null);
107 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null);
108 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null);
109 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null);
110 public final Type botType = new BottomType();
111 public final JCVoidType voidType = new JCVoidType();
112
113 private final Names names;
114 private final JavacMessages messages;
115 private final Completer initialCompleter;
116 private final Completer moduleCompleter;
117
118 /** A symbol for the unnamed module.
119 */
120 public final ModuleSymbol unnamedModule;
121
122 /** The error module.
123 */
124 public final ModuleSymbol errModule;
125
126 /** A symbol for no module, for use with -source 8 or less
127 */
128 public final ModuleSymbol noModule;
129
130 /** A symbol for the root package.
131 */
132 public final PackageSymbol rootPackage;
133
134 /** A symbol that stands for a missing symbol.
135 */
136 public final TypeSymbol noSymbol;
137
138 /** The error symbol.
139 */
140 public final ClassSymbol errSymbol;
141
142 /** The unknown symbol.
143 */
144 public final ClassSymbol unknownSymbol;
145
146 /** A value for the errType, with a originalType of noType */
147 public final Type errType;
148
149 /** A value for the unknown type. */
150 public final Type unknownType;
151
152 /** The builtin type of all arrays. */
153 public final ClassSymbol arrayClass;
154 public final MethodSymbol arrayCloneMethod;
155
156 /** VGJ: The (singleton) type of all bound types. */
157 public final ClassSymbol boundClass;
158
159 /** The builtin type of all methods. */
160 public final ClassSymbol methodClass;
161
162 /** A symbol for the java.base module.
163 */
164 public final ModuleSymbol java_base;
165
166 /** Predefined types.
167 */
168 public final Type objectType;
169 public final Type objectMethodsType;
170 public final Type objectsType;
171 public final Type classType;
172 public final Type classLoaderType;
173 public final Type stringType;
174 public final Type stringBufferType;
175 public final Type stringBuilderType;
176 public final Type cloneableType;
177 public final Type serializableType;
178 public final Type serializedLambdaType;
179 public final Type varHandleType;
180 public final Type methodHandleType;
181 public final Type methodHandleLookupType;
182 public final Type methodTypeType;
183 public final Type nativeHeaderType;
184 public final Type throwableType;
185 public final Type errorType;
186 public final Type interruptedExceptionType;
187 public final Type illegalArgumentExceptionType;
188 public final Type exceptionType;
189 public final Type runtimeExceptionType;
190 public final Type classNotFoundExceptionType;
191 public final Type noClassDefFoundErrorType;
192 public final Type noSuchFieldErrorType;
193 public final Type assertionErrorType;
194 public final Type incompatibleClassChangeErrorType;
195 public final Type cloneNotSupportedExceptionType;
196 public final Type matchExceptionType;
197 public final Type nullPointerExceptionType;
198 public final Type annotationType;
199 public final TypeSymbol enumSym;
200 public final Type listType;
201 public final Type collectionsType;
202 public final Type comparableType;
203 public final Type comparatorType;
204 public final Type arraysType;
205 public final Type iterableType;
206 public final Type iteratorType;
207 public final Type annotationTargetType;
208 public final Type overrideType;
209 public final Type retentionType;
210 public final Type deprecatedType;
211 public final Type suppressWarningsType;
212 public final Type supplierType;
213 public final Type inheritedType;
214 public final Type profileType;
215 public final Type proprietaryType;
216 public final Type systemType;
217 public final Type autoCloseableType;
218 public final Type trustMeType;
219 public final Type lambdaMetafactory;
220 public final Type stringConcatFactory;
221 public final Type repeatableType;
222 public final Type documentedType;
223 public final Type elementTypeType;
224 public final Type functionalInterfaceType;
225 public final Type previewFeatureType;
226 public final Type previewFeatureInternalType;
227 public final Type typeDescriptorType;
228 public final Type recordType;
229 public final Type switchBootstrapsType;
230 public final Type valueBasedType;
231 public final Type valueBasedInternalType;
232
233 // For serialization lint checking
234 public final Type objectStreamFieldType;
235 public final Type objectInputStreamType;
236 public final Type objectOutputStreamType;
237 public final Type ioExceptionType;
238 public final Type objectStreamExceptionType;
239 public final Type externalizableType;
240
241 /** The symbol representing the length field of an array.
242 */
243 public final VarSymbol lengthVar;
244
245 /** The symbol representing the final finalize method on enums */
246 public final MethodSymbol enumFinalFinalize;
247
248 /** The symbol representing the close method on TWR AutoCloseable type */
249 public final MethodSymbol autoCloseableClose;
250
251 /** The predefined type that belongs to a tag.
252 */
253 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()];
254
255 /** The name of the class that belongs to a basic type tag.
256 */
257 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()];
258
259 /** A hashtable containing the encountered top-level and member classes,
260 * indexed by flat names. The table does not contain local classes.
261 * It should be updated from the outside to reflect classes defined
262 * by compiled source files.
263 */
264 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>();
265
266 /** A hashtable containing the encountered packages.
267 * the table should be updated from outside to reflect packages defined
268 * by compiled source files.
269 */
270 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>();
271
272 /** A hashtable giving the encountered modules.
273 */
274 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>();
275
276 private final Map<Types.UniqueType, VarSymbol> classFields = new HashMap<>();
277
278 public VarSymbol getClassField(Type type, Types types) {
279 return classFields.computeIfAbsent(
280 new UniqueType(type, types), k -> {
281 Type arg = null;
282 if (type.getTag() == ARRAY || type.getTag() == CLASS) {
283 /* Temporary treatment for primitive class: Given a primitive class V that implements
284 I1, I2, ... In, V.class is typed to be Class<? extends Object & I1 & I2 .. & In>
285 */
286 if (allowPrimitiveClasses && type.isPrimitiveClass()) {
287 List<Type> bounds = List.of(objectType).appendList(((ClassSymbol) type.tsym).getInterfaces());
288 arg = new WildcardType(bounds.size() > 1 ? types.makeIntersectionType(bounds) : objectType, BoundKind.EXTENDS, boundClass);
289 } else {
290 arg = types.erasure(type);
291 }
292 }
293 else if (type.isPrimitiveOrVoid())
294 arg = types.boxedClass(type).type;
295 else
296 throw new AssertionError(type);
297
298 Type t = new ClassType(
299 classType.getEnclosingType(), List.of(arg), classType.tsym);
300 return new VarSymbol(
301 STATIC | PUBLIC | FINAL, names._class, t, type.tsym);
302 });
303 }
304
305 public void initType(Type type, ClassSymbol c) {
306 type.tsym = c;
307 typeOfTag[type.getTag().ordinal()] = type;
308 }
309
310 public void initType(Type type, String name) {
311 initType(
312 type,
313 new ClassSymbol(
314 PUBLIC, names.fromString(name), type, rootPackage));
315 }
316
317 public void initType(Type type, String name, String bname) {
318 initType(type, name);
319 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname);
320 }
321
322 /** The class symbol that owns all predefined symbols.
323 */
324 public final ClassSymbol predefClass;
325
326 /** Enter a class into symbol table.
327 * @param s The name of the class.
328 */
329 private Type enterClass(String s) {
330 return enterClass(java_base, names.fromString(s)).type;
331 }
332
333 public void synthesizeEmptyInterfaceIfMissing(final Type type) {
334 final Completer completer = type.tsym.completer;
335 type.tsym.completer = new Completer() {
336 @Override
337 public void complete(Symbol sym) throws CompletionFailure {
338 try {
339 completer.complete(sym);
340 } catch (CompletionFailure e) {
341 sym.flags_field |= (PUBLIC | INTERFACE);
342 ((ClassType) sym.type).supertype_field = objectType;
343 }
344 }
345
346 @Override
347 public boolean isTerminal() {
348 return completer.isTerminal();
349 }
350 };
351 }
352
353 public void synthesizeBoxTypeIfMissing(final Type type) {
354 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]);
355 final Completer completer = sym.completer;
356 sym.completer = new Completer() {
357 @Override
358 public void complete(Symbol sym) throws CompletionFailure {
359 try {
360 completer.complete(sym);
361 } catch (CompletionFailure e) {
362 sym.flags_field |= PUBLIC;
363 ((ClassType) sym.type).supertype_field = objectType;
364 MethodSymbol boxMethod =
365 new MethodSymbol(PUBLIC | STATIC, names.valueOf,
366 new MethodType(List.of(type), sym.type,
367 List.nil(), methodClass),
368 sym);
369 sym.members().enter(boxMethod);
370 MethodSymbol unboxMethod =
371 new MethodSymbol(PUBLIC,
372 type.tsym.name.append(names.Value), // x.intValue()
373 new MethodType(List.nil(), type,
374 List.nil(), methodClass),
375 sym);
376 sym.members().enter(unboxMethod);
377 }
378 }
379
380 @Override
381 public boolean isTerminal() {
382 return completer.isTerminal();
383 }
384 };
385 }
386
387 // Enter a synthetic class that is used to mark classes in ct.sym.
388 // This class does not have a class file.
389 private Type enterSyntheticAnnotation(String name) {
390 // for now, leave the module null, to prevent problems from synthesizing the
391 // existence of a class in any specific module, including noModule
392 ClassType type = (ClassType)enterClass(java_base, names.fromString(name)).type;
393 ClassSymbol sym = (ClassSymbol)type.tsym;
394 sym.completer = Completer.NULL_COMPLETER;
395 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE;
396 sym.erasure_field = type;
397 sym.members_field = WriteableScope.create(sym);
398 type.typarams_field = List.nil();
399 type.allparams_field = List.nil();
400 type.supertype_field = annotationType;
401 type.interfaces_field = List.nil();
402 return type;
403 }
404
405 /** Constructor; enters all predefined identifiers and operators
406 * into symbol table.
407 */
408 protected Symtab(Context context) throws CompletionFailure {
409 context.put(symtabKey, this);
410
411 names = Names.instance(context);
412
413 // Create the unknown type
414 unknownType = new UnknownType();
415
416 messages = JavacMessages.instance(context);
417
418 MissingInfoHandler missingInfoHandler = MissingInfoHandler.instance(context);
419
420 Target target = Target.instance(context);
421 rootPackage = new RootPackageSymbol(names.empty, null,
422 missingInfoHandler,
423 target.runtimeUseNestAccess());
424
425 // create the basic builtin symbols
426 unnamedModule = new ModuleSymbol(names.empty, null) {
427 {
428 directives = List.nil();
429 exports = List.nil();
430 provides = List.nil();
431 uses = List.nil();
432 ModuleSymbol java_base = enterModule(names.java_base);
433 com.sun.tools.javac.code.Directive.RequiresDirective d =
434 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
435 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
436 requires = List.of(d);
437 }
438 @Override
439 public String toString() {
440 return messages.getLocalizedString("compiler.misc.unnamed.module");
441 }
442 };
443 addRootPackageFor(unnamedModule);
444 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage);
445
446 errModule = new ModuleSymbol(names.empty, null) {
447 {
448 directives = List.nil();
449 exports = List.nil();
450 provides = List.nil();
451 uses = List.nil();
452 ModuleSymbol java_base = enterModule(names.java_base);
453 com.sun.tools.javac.code.Directive.RequiresDirective d =
454 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base,
455 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED));
456 requires = List.of(d);
457 }
458 };
459 addRootPackageFor(errModule);
460
461 noModule = new ModuleSymbol(names.empty, null) {
462 @Override public boolean isNoModule() {
463 return true;
464 }
465 };
466 addRootPackageFor(noModule);
467
468 noSymbol = new TypeSymbol(NIL, 0, names.empty, Type.noType, rootPackage) {
469 @Override @DefinedBy(Api.LANGUAGE_MODEL)
470 public <R, P> R accept(ElementVisitor<R, P> v, P p) {
471 return v.visitUnknown(this, p);
472 }
473 };
474
475 // create the error symbols
476 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage);
477 errType = new ErrorType(errSymbol, Type.noType);
478
479 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage);
480 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol);
481 unknownSymbol.type = unknownType;
482
483 // initialize builtin types
484 initType(byteType, "byte", "Byte");
485 initType(shortType, "short", "Short");
486 initType(charType, "char", "Character");
487 initType(intType, "int", "Integer");
488 initType(longType, "long", "Long");
489 initType(floatType, "float", "Float");
490 initType(doubleType, "double", "Double");
491 initType(booleanType, "boolean", "Boolean");
492 initType(voidType, "void", "Void");
493 initType(botType, "<nulltype>");
494 initType(errType, errSymbol);
495 initType(unknownType, unknownSymbol);
496
497 // the builtin class of all arrays
498 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol);
499
500 // VGJ
501 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol);
502 boundClass.members_field = new Scope.ErrorScope(boundClass);
503
504 // the builtin class of all methods
505 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol);
506 methodClass.members_field = new Scope.ErrorScope(boundClass);
507
508 // Create class to hold all predefined constants and operations.
509 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage);
510 WriteableScope scope = WriteableScope.create(predefClass);
511 predefClass.members_field = scope;
512
513 // Get the initial completer for Symbols from the ClassFinder
514 initialCompleter = ClassFinder.instance(context).getCompleter();
515 rootPackage.members_field = WriteableScope.create(rootPackage);
516
517 // Enter symbols for basic types.
518 scope.enter(byteType.tsym);
519 scope.enter(shortType.tsym);
520 scope.enter(charType.tsym);
521 scope.enter(intType.tsym);
522 scope.enter(longType.tsym);
523 scope.enter(floatType.tsym);
524 scope.enter(doubleType.tsym);
525 scope.enter(booleanType.tsym);
526 scope.enter(errType.tsym);
527
528 // Enter symbol for the errSymbol
529 scope.enter(errSymbol);
530
531 Source source = Source.instance(context);
532 if (Feature.MODULES.allowedInSource(source)) {
533 java_base = enterModule(names.java_base);
534 //avoid completing java.base during the Symtab initialization
535 java_base.completer = Completer.NULL_COMPLETER;
536 java_base.visiblePackages = Collections.emptyMap();
537 } else {
538 java_base = noModule;
539 }
540
541 // Get the initial completer for ModuleSymbols from Modules
542 moduleCompleter = Modules.instance(context).getCompleter();
543
544 // Enter predefined classes. All are assumed to be in the java.base module.
545 objectType = enterClass("java.lang.Object");
546 objectMethodsType = enterClass("java.lang.runtime.ObjectMethods");
547 objectsType = enterClass("java.util.Objects");
548 classType = enterClass("java.lang.Class");
549 stringType = enterClass("java.lang.String");
550 stringBufferType = enterClass("java.lang.StringBuffer");
551 stringBuilderType = enterClass("java.lang.StringBuilder");
552 cloneableType = enterClass("java.lang.Cloneable");
553 throwableType = enterClass("java.lang.Throwable");
554 serializableType = enterClass("java.io.Serializable");
555 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda");
556 varHandleType = enterClass("java.lang.invoke.VarHandle");
557 methodHandleType = enterClass("java.lang.invoke.MethodHandle");
558 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup");
559 methodTypeType = enterClass("java.lang.invoke.MethodType");
560 errorType = enterClass("java.lang.Error");
561 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException");
562 interruptedExceptionType = enterClass("java.lang.InterruptedException");
563 exceptionType = enterClass("java.lang.Exception");
564 runtimeExceptionType = enterClass("java.lang.RuntimeException");
565 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException");
566 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError");
567 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError");
568 assertionErrorType = enterClass("java.lang.AssertionError");
569 incompatibleClassChangeErrorType = enterClass("java.lang.IncompatibleClassChangeError");
570 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException");
571 matchExceptionType = enterClass("java.lang.MatchException");
572 nullPointerExceptionType = enterClass("java.lang.NullPointerException");
573 annotationType = enterClass("java.lang.annotation.Annotation");
574 classLoaderType = enterClass("java.lang.ClassLoader");
575 enumSym = enterClass(java_base, names.java_lang_Enum);
576 enumFinalFinalize =
577 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL,
578 names.finalize,
579 new MethodType(List.nil(), voidType,
580 List.nil(), methodClass),
581 enumSym);
582 listType = enterClass("java.util.List");
583 collectionsType = enterClass("java.util.Collections");
584 comparableType = enterClass("java.lang.Comparable");
585 comparatorType = enterClass("java.util.Comparator");
586 arraysType = enterClass("java.util.Arrays");
587 iterableType = enterClass("java.lang.Iterable");
588 iteratorType = enterClass("java.util.Iterator");
589 annotationTargetType = enterClass("java.lang.annotation.Target");
590 overrideType = enterClass("java.lang.Override");
591 retentionType = enterClass("java.lang.annotation.Retention");
592 deprecatedType = enterClass("java.lang.Deprecated");
593 suppressWarningsType = enterClass("java.lang.SuppressWarnings");
594 supplierType = enterClass("java.util.function.Supplier");
595 inheritedType = enterClass("java.lang.annotation.Inherited");
596 repeatableType = enterClass("java.lang.annotation.Repeatable");
597 documentedType = enterClass("java.lang.annotation.Documented");
598 elementTypeType = enterClass("java.lang.annotation.ElementType");
599 systemType = enterClass("java.lang.System");
600 autoCloseableType = enterClass("java.lang.AutoCloseable");
601 autoCloseableClose = new MethodSymbol(PUBLIC,
602 names.close,
603 new MethodType(List.nil(), voidType,
604 List.of(exceptionType), methodClass),
605 autoCloseableType.tsym);
606 trustMeType = enterClass("java.lang.SafeVarargs");
607 nativeHeaderType = enterClass("java.lang.annotation.Native");
608 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory");
609 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory");
610 functionalInterfaceType = enterClass("java.lang.FunctionalInterface");
611 previewFeatureType = enterClass("jdk.internal.javac.PreviewFeature");
612 previewFeatureInternalType = enterSyntheticAnnotation("jdk.internal.PreviewFeature+Annotation");
613 typeDescriptorType = enterClass("java.lang.invoke.TypeDescriptor");
614 recordType = enterClass("java.lang.Record");
615 switchBootstrapsType = enterClass("java.lang.runtime.SwitchBootstraps");
616 valueBasedType = enterClass("jdk.internal.ValueBased");
617 valueBasedInternalType = enterSyntheticAnnotation("jdk.internal.ValueBased+Annotation");
618 // For serialization lint checking
619 objectStreamFieldType = enterClass("java.io.ObjectStreamField");
620 objectInputStreamType = enterClass("java.io.ObjectInputStream");
621 objectOutputStreamType = enterClass("java.io.ObjectOutputStream");
622 ioExceptionType = enterClass("java.io.IOException");
623 objectStreamExceptionType = enterClass("java.io.ObjectStreamException");
624 externalizableType = enterClass("java.io.Externalizable");
625
626 synthesizeEmptyInterfaceIfMissing(autoCloseableType);
627 synthesizeEmptyInterfaceIfMissing(cloneableType);
628 synthesizeEmptyInterfaceIfMissing(serializableType);
629 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory);
630 synthesizeEmptyInterfaceIfMissing(serializedLambdaType);
631 synthesizeEmptyInterfaceIfMissing(stringConcatFactory);
632 synthesizeBoxTypeIfMissing(doubleType);
633 synthesizeBoxTypeIfMissing(floatType);
634 synthesizeBoxTypeIfMissing(voidType);
635
636 // Enter a synthetic class that is used to mark internal
637 // proprietary classes in ct.sym. This class does not have a
638 // class file.
639 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation");
640
641 // Enter a synthetic class that is used to provide profile info for
642 // classes in ct.sym. This class does not have a class file.
643 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation");
644 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym);
645 profileType.tsym.members().enter(m);
646
647 // Enter a class for arrays.
648 // The class implements java.lang.Cloneable and java.io.Serializable.
649 // It has a final length field and a clone method.
650 ClassType arrayClassType = (ClassType)arrayClass.type;
651 arrayClassType.supertype_field = objectType;
652 arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
653 arrayClass.members_field = WriteableScope.create(arrayClass);
654 lengthVar = new VarSymbol(
655 PUBLIC | FINAL,
656 names.length,
657 intType,
658 arrayClass);
659 arrayClass.members().enter(lengthVar);
660 arrayCloneMethod = new MethodSymbol(
661 PUBLIC,
662 names.clone,
663 new MethodType(List.nil(), objectType,
664 List.nil(), methodClass),
665 arrayClass);
666 arrayClass.members().enter(arrayCloneMethod);
667
668 if (java_base != noModule)
669 java_base.completer = moduleCompleter::complete; //bootstrap issues
670 Options options = Options.instance(context);
671 allowPrimitiveClasses = Feature.PRIMITIVE_CLASSES.allowedInSource(source) && options.isSet("enablePrimitiveClasses");
672 }
673
674 /** Define a new class given its name and owner.
675 */
676 public ClassSymbol defineClass(Name name, Symbol owner) {
677 ClassSymbol c = new ClassSymbol(0, name, owner);
678 c.completer = initialCompleter;
679 return c;
680 }
681
682 /** Create a new toplevel or member class symbol with given name
683 * and owner and enter in `classes' unless already there.
684 */
685 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) {
686 Assert.checkNonNull(msym);
687 Name flatname = TypeSymbol.formFlatName(name, owner);
688 ClassSymbol c = getClass(msym, flatname);
689 if (c == null) {
690 c = defineClass(name, owner);
691 doEnterClass(msym, c);
692 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP &&
693 c.owner.kind == PCK && ((c.flags_field & FROM_SOURCE) == 0)) {
694 // reassign fields of classes that might have been loaded with
695 // their flat names.
696 c.owner.members().remove(c);
697 c.name = name;
698 c.owner = owner;
699 c.fullname = ClassSymbol.formFullName(name, owner);
700 }
701 return c;
702 }
703
704 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) {
705 Assert.checkNonNull(msym, flatName::toString);
706 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym);
707 }
708
709 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) {
710 return lookupPackage(msym, flatName, false);
711 }
712
713 private PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName, boolean onlyExisting) {
714 Assert.checkNonNull(msym);
715
716 if (flatName.isEmpty()) {
717 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package!
718 return msym.unnamedPackage;
719 }
720
721 if (msym == noModule) {
722 return enterPackage(msym, flatName);
723 }
724
725 msym.complete();
726
727 PackageSymbol pack;
728
729 pack = msym.visiblePackages.get(flatName);
730
731 if (pack != null)
732 return pack;
733
734 pack = getPackage(msym, flatName);
735
736 if ((pack != null && pack.exists()) || onlyExisting)
737 return pack;
738
739 boolean dependsOnUnnamed = msym.requires != null &&
740 msym.requires.stream()
741 .map(rd -> rd.module)
742 .anyMatch(mod -> mod == unnamedModule);
743
744 if (dependsOnUnnamed) {
745 //msyms depends on the unnamed module, for which we generally don't know
746 //the list of packages it "exports" ahead of time. So try to lookup the package in the
747 //current module, and in the unnamed module and see if it exists in one of them
748 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName);
749
750 if (unnamedPack != null && unnamedPack.exists()) {
751 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
752 return unnamedPack;
753 }
754
755 pack = enterPackage(msym, flatName);
756 pack.complete();
757 if (pack.exists())
758 return pack;
759
760 unnamedPack = enterPackage(unnamedModule, flatName);
761 unnamedPack.complete();
762 if (unnamedPack.exists()) {
763 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack);
764 return unnamedPack;
765 }
766
767 return pack;
768 }
769
770 return enterPackage(msym, flatName);
771 }
772
773 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>();
774
775 public void removeClass(ModuleSymbol msym, Name flatName) {
776 classes.getOrDefault(flatName, EMPTY).remove(msym);
777 }
778
779 public Iterable<ClassSymbol> getAllClasses() {
780 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator());
781 }
782
783 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) {
784 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs);
785 }
786
787 /** Create a new member or toplevel class symbol with given flat name
788 * and enter in `classes' unless already there.
789 */
790 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) {
791 Assert.checkNonNull(msym);
792 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname));
793 Assert.checkNonNull(ps);
794 Assert.checkNonNull(ps.modle);
795 ClassSymbol c = getClass(ps.modle, flatname);
796 if (c == null) {
797 c = defineClass(Convert.shortName(flatname), ps);
798 doEnterClass(ps.modle, c);
799 return c;
800 } else
801 return c;
802 }
803
804 /** Check to see if a package exists, given its fully qualified name.
805 */
806 public boolean packageExists(ModuleSymbol msym, Name fullname) {
807 Assert.checkNonNull(msym);
808 PackageSymbol pack = lookupPackage(msym, fullname, true);
809 return pack != null && pack.exists();
810 }
811
812 /** Make a package, given its fully qualified name.
813 */
814 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) {
815 Assert.checkNonNull(currModule);
816 PackageSymbol p = getPackage(currModule, fullname);
817 if (p == null) {
818 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule);
819 p = new PackageSymbol(
820 Convert.shortName(fullname),
821 enterPackage(currModule, Convert.packagePart(fullname)));
822 p.completer = initialCompleter;
823 p.modle = currModule;
824 doEnterPackage(currModule, p);
825 }
826 return p;
827 }
828
829 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) {
830 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack);
831 msym.enclosedPackages = msym.enclosedPackages.prepend(pack);
832 }
833
834 private void addRootPackageFor(ModuleSymbol module) {
835 doEnterPackage(module, rootPackage);
836 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) {
837 @Override
838 public String toString() {
839 return messages.getLocalizedString("compiler.misc.unnamed.package");
840 }
841 };
842 unnamedPackage.modle = module;
843 //we cannot use a method reference below, as initialCompleter might be null now
844 unnamedPackage.completer = s -> initialCompleter.complete(s);
845 unnamedPackage.flags_field |= EXISTS;
846 module.unnamedPackage = unnamedPackage;
847 }
848
849 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) {
850 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module);
851 }
852
853 public ModuleSymbol enterModule(Name name) {
854 ModuleSymbol msym = modules.get(name);
855 if (msym == null) {
856 msym = ModuleSymbol.create(name, names.module_info);
857 addRootPackageFor(msym);
858 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues
859 modules.put(name, msym);
860 }
861 return msym;
862 }
863
864 public ModuleSymbol getModule(Name name) {
865 return modules.get(name);
866 }
867
868 //temporary:
869 public ModuleSymbol inferModule(Name packageName) {
870 if (packageName.isEmpty())
871 return java_base == noModule ? noModule : unnamedModule;//!
872
873 ModuleSymbol msym = null;
874 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
875 if (map == null)
876 return null;
877 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) {
878 if (!e.getValue().members().isEmpty()) {
879 if (msym == null) {
880 msym = e.getKey();
881 } else {
882 return null;
883 }
884 }
885 }
886 return msym;
887 }
888
889 public List<ModuleSymbol> listPackageModules(Name packageName) {
890 if (packageName.isEmpty())
891 return List.nil();
892
893 List<ModuleSymbol> result = List.nil();
894 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName);
895 if (map != null) {
896 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) {
897 if (!e.getValue().members().isEmpty()) {
898 result = result.prepend(e.getKey());
899 }
900 }
901 }
902 return result;
903 }
904
905 public Collection<ModuleSymbol> getAllModules() {
906 return modules.values();
907 }
908
909 public Iterable<ClassSymbol> getClassesForName(Name candidate) {
910 return classes.getOrDefault(candidate, Collections.emptyMap()).values();
911 }
912
913 public Iterable<PackageSymbol> getPackagesForName(Name candidate) {
914 return packages.getOrDefault(candidate, Collections.emptyMap()).values();
915 }
916 }